<!DOCTYPE html>
<meta charset="utf-8">
<title>Replace before load, triggered by location setters</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="resources/helpers.js"></script>

<body>
<script>
"use strict";

promise_test(async t => {
  const sentinelIframe = await setupSentinelIframe(t);
  const startingHistoryLength = history.length;

  const startURL = "resources/code-injector.html?pipe=sub(none)&code=" + encodeURIComponent("location.href = `/common/blank.html?thereplacement`;");
  const afterReplacementURL = "/common/blank.html?thereplacement";
  const iframe = insertIframe(t, startURL);
  assert_equals(history.length, startingHistoryLength, "Inserting the under-test iframe must not change history.length");

  await waitForLoad(t, iframe, afterReplacementURL);
  assert_equals(history.length, startingHistoryLength, "history.length must not change after waiting for the replacement");

  await checkSentinelIframe(t, sentinelIframe);
  assert_equals(history.length, startingHistoryLength, "history.length must not change after checking the sentinel iframe");
}, "href");

promise_test(async t => {
  const sentinelIframe = await setupSentinelIframe(t);
  const startingHistoryLength = history.length;

  const startURL = "resources/code-injector.html?pipe=sub(none)&code=" + encodeURIComponent("location.search = `thereplacement`;");
  const afterReplacementURL = "resources/code-injector.html?thereplacement";
  const iframe = insertIframe(t, startURL);
  assert_equals(history.length, startingHistoryLength, "Inserting the under-test iframe must not change history.length");

  await waitForLoad(t, iframe, afterReplacementURL);
  assert_equals(history.length, startingHistoryLength, "history.length must not change after waiting for the replacement");

  await checkSentinelIframe(t, sentinelIframe);
}, "search");

promise_test(async t => {
  const sentinelIframe = await setupSentinelIframe(t);
  const startingHistoryLength = history.length;

  const startURL = "resources/code-injector.html?pipe=sub(none)&code=" + encodeURIComponent("location.hash = `thereplacement`;");
  const afterReplacementURL = startURL + "#thereplacement";
  const iframe = insertIframe(t, startURL);
  assert_equals(history.length, startingHistoryLength, "Inserting the under-test iframe must not change history.length");

  await waitForLoad(t, iframe, afterReplacementURL);
  assert_equals(history.length, startingHistoryLength, "history.length must not change after waiting for the replacement");

  await checkSentinelIframe(t, sentinelIframe);
  assert_equals(history.length, startingHistoryLength, "history.length must not change after checking the sentinel iframe");
}, "hash");
</script>
